We're going to solve 7857 multiplied by 1615
7857 × 1615 = 1615 × (7857)
+ 1615 × 7 that equals 11305
+ 1615 × 50 which equals 80750
+ 1615 × 800 that is equal 1292000
+ 1615 × 7000 resulting in 11305000

= 12689055
